hello i was starting a new project using hc-05 and arduino using blynk app.
i am using the example sketch of hc-05 given in blynk library.
when i am connecting to hc-05 using blynk bluetooth widget. My hc-05 led blink rapidly 2 times in 2 second interval. And my d13 led also not working when i try to give the input
the led on hc-05 should blink 1 time in every 2 sec, but it blink rapidly 2 times in 2 sec interval…
why??? and what does it mean?
This is not a Blynk related issue, rather it is about how your HC-05 is setup or programmed.
On my various BT modules for instance, the LED flashes rapidly until connected, then stays steadily lit.
I don’t recall off hand how I programmed mine, but I recommend Googling “HC-05 LED blink code” and/or “HC-05 Modes” and seeing what mode it is in and the ways there are to reflash/program it into the mode you want.
Aside from BT and BLE being in BETA with Blynk (thus there are a few glitches) I still think it is probably how your module is programmed… just becase it works in a simple terminal connection doesn’t meen it is set up for whatever Blynk requires. Perhaps it is in slave mode instead of master, or vice versa, or wrong BAUD rate (I have set mine to 9600) I don’t know… but I would try connecting to it in AT mode and try a different settings… sorry I can’t remember exactly how I did mine, but Google around and you will find many resources for those modules.